Abstract
Critical heat flux is a very important factor in designing various boiling two-phase flow systems, and therefore many investigations under steady flow conditions have been conducted so far. However, in boiling systems, flow instabilities, such as density wave oscillation, occur under a certain operating conditions. In this investigation, CHF experiments under oscillatory flow conditions in inclined tube have been conducted. On the basis of the experimental results, dryout mechanisms in the inclined boiling channel are classified into three patterns under steady flow condition, and the influence magnitude of the flow oscillation on CHF is quite difference among these patterns.